Hacked but would like to know what happened

[pbleak]

Hello all,

So for a while I had been away and came back to find a wallet emptied. You can see how quickly it happened here:
http://106.187.103.143/address/1LNFx7QQkpmam9jLjpyd52QqiVfahix9gQ

I move some Bitcoin in. 20 minutes later is off to Germany (I assume a VPN, etc.). I see it then splits off to a bunch of wallets. I then see it goes on a bit of a journey of fragmentation.

OK, I am no fool. It is lost. However, is there any way for me to at least understand the nature of such an attack. To your eyes is this some lone wolf or something more sophisticated.

Frankly I think this means I am done with Bitcoin. I've been super safe for years, but then in 20 minutes someone manages to relieve me of roughly 500e in Bitcoin.

I use electrum.

[jl2012]

Hello all,

So for a while I had been away and came back to find a wallet emptied. You can see how quickly it happened here:
http://106.187.103.143/address/1LNFx7QQkpmam9jLjpyd52QqiVfahix9gQ

I move some Bitcoin in. 20 minutes later is off to Germany (I assume a VPN, etc.). I see it then splits off to a bunch of wallets. I then see it goes on a bit of a journey of fragmentation.

OK, I am no fool. It is lost. However, is there any way for me to at least understand the nature of such an attack. To your eyes is this some lone wolf or something more sophisticated.

Frankly I think this means I am done with Bitcoin. I've been super safe for years, but then in 20 minutes someone manages to relieve me of roughly 500e in Bitcoin.

I use electrum.

The computer with your private key is compromised. Period.

If you are not using offline wallet function of Electrum, you are not super safe.

[pbleak]

Hello all,

So for a while I had been away and came back to find a wallet emptied. You can see how quickly it happened here:
http://106.187.103.143/address/1LNFx7QQkpmam9jLjpyd52QqiVfahix9gQ

I move some Bitcoin in. 20 minutes later is off to Germany (I assume a VPN, etc.). I see it then splits off to a bunch of wallets. I then see it goes on a bit of a journey of fragmentation.

OK, I am no fool. It is lost. However, is there any way for me to at least understand the nature of such an attack. To your eyes is this some lone wolf or something more sophisticated.

Frankly I think this means I am done with Bitcoin. I've been super safe for years, but then in 20 minutes someone manages to relieve me of roughly 500e in Bitcoin.

I use electrum.

The computer with your private key is compromised. Period.

If you are not using offline wallet function of Electrum, you are not super safe.

Cheers, I expected as much. Ugh. But yes, it is the only way they could do it right? They would not even have needed the private key, but simple a RAT to execute the transaction. Lesson learned.

[spartacusrex]

Windows / Mac / or Linux ?

[zamanpurba]

ohh...sad for your loss..

recently heard a guy hacked a members account just chatting with him on Skype and a man writing something secretly in arabic about selling databases..i dont know what the hell is going..i will suggest you to keep all the amount of btc in deep-freezer and hide your private key very secretely.

thank you.

[pbleak]

Windows 8 machine hence the small amount on there. I don't consider it a major loss and granting it's a Windows machine am hardly surprised. I'll do a few scans and then clean install. The former I am just curious about. There's no especial time when I've been not careful even on this machine.

[pbleak]

ohh...sad for your loss..

recently heard a guy hacked a members account just chatting with him on Skype and a man writing something secretly in arabic about selling databases..i dont know what the hell is going..i will suggest you to keep all the amount of btc in deep-freezer and hide your private key very secretely.

thank you.

I do normally. This is the money I just like to have on my Windows wallet for general use. I don't keep anything substantial on the same machine.

[Amph]

nothing suspicious among the process on the task manager? some unknown folder in the local or %appdata% path?

what netstat -on say? you should have checked those before formatting

but it could always be a hidden rat or rootkit or something else

[ragi]

Was your Electrum encrypted? Portable or standalone version? Are you sure this 14HXNqSefPtNfDyHtfeMv1Hngx3W5JfgW6 is not a change address?

Do you have Teamviewer on your machine by any chance?

[Trouble821]

What antivirus software and firewall are you using, and are you using the firewall's default settings or your own custom settings?

Some firewalls aren't much good unless you use your own extremely strict custom settings. Windows built in firewall is almost useless.

[pbleak]

nothing suspicious among the process on the task manager? some unknown folder in the local or %appdata% path?

what netstat -on say? you should have checked those before formatting

but it could always be a hidden rat or rootkit or something else

Nothing suspicious though I'm doing a bit of a hunt now (I have no reformatted yet as there is now nothing on the machine worths stealing).

I'm going through everything now to see what may about rootkits.

[pbleak]

Was your Electrum encrypted? Portable or standalone version? Are you sure this 14HXNqSefPtNfDyHtfeMv1Hngx3W5JfgW6 is not a change address?

Do you have Teamviewer on your machine by any chance?

Encrypted yes, albeit with a password only for it, I am not sure about it being a change address. It looks from the blockchain like a deliberate move of Bitcoin movement from someone and I do not use a German VPN.

No Teamviewer though I may come back to you all on that.

[pbleak]

What antivirus software and firewall are you using, and are you using the firewall's default settings or your own custom settings?

Some firewalls aren't much good unless you use your own extremely strict custom settings. Windows built in firewall is almost useless.

It's about as locked down as a Windows machine can get so they were determined or were waiting a while to get me.

[pbleak]

Was your Electrum encrypted? Portable or standalone version? Are you sure this 14HXNqSefPtNfDyHtfeMv1Hngx3W5JfgW6 is not a change address?

Do you have Teamviewer on your machine by any chance?

Actually this change address could be a possibility. Let me check. Need to be careful here.

[pbleak]

OK, yes, so I guess my security is better than expected. The 1BTC I must have spent. The change address wallet still has it's amount. I just need to do the boring recovery part now. Thanks all.

[ragi]

What does your Electrum balance says? Bottom left. Also the transaction is first relayed by German IP, but that does not mean this is the person who took it.

Did you send 1BTC before all that happened?

[ragi]

OK, yes, so I guess my security is better than expected. The 1BTC I must have spent. The change address wallet still has it's amount. I just need to do the boring recovery part now. Thanks all.

Glad everything worked out! It's not boring, nor recovery. They are still safe in the change address, if you want them out of it, just send them to another.

You can disable change addresses from options if you don't want to be confused in the future.

[pbleak]

What does your Electrum balance says? Bottom left. Also the transaction is first relayed by German IP, but that does not mean this is the person who took it.

Did you send 1BTC before all that happened?

Checking now. It's possible someone has stolen the private key. And yes, I believe now I must have. I reviewed my records and sent 1 BTC to Bitfinex on that day. Just trying out the change wallet address now. Still awaiting regeneration from seed.

[pbleak]

Thanks. I am positive it was an error on my part. Fixable hopefully!

[neoneros]

Hacked by confusion. So nothing is lost after all?